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L9929 数据表(PDF) 1 Page - STMicroelectronics |
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L9929 数据表(HTML) 1 Page - STMicroelectronics |
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1 / 23 page ![]() 1/23 L9929 May 2005 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. 1 Features ■ OPERATING SUPPLY VOLTAGE 5V TO 28V ■ TYPICAL RDSon = 150 m Ω FOR EACH OUTPUT TRANSISTOR (AT 25°C) ■ CONTINOUS DC LOAD CURRENT 5A (Tcase < 100 °C) ■ OUTPUT CURRENT LIMITATION AT TYP. 8.6A ■ SHORT CIRCUIT SHUT DOWN FOR OUTPUT CURRENTS OVER TYP. 10.6A ■ LOGIC- INPUTS TTL/CMOS-COMPATIBLE ■ OPERATING-FREQUENCY UP TO 30 kHz ■ OVER TEMPERATURE PROTECTION ■ SHORT CIRCUIT PROTECTION ■ UNDERVOLTAGE DISABLE FUNCTION ■ DIAGNOSTIC BY SPI OR STATUS-FLAG (CONFIGURABLE) ■ ENABLE AND DISABLE INPUT ■ SO20 POWER PACKAGE 2 Description The L9929 is an SPI controlled H-Bridge, de- signed for the control of DC and stepper motors in safety critical applications and under extreme en- vironmental conditions. The H-Bridge is protected against over tempera- ture and short circuits and has an under voltage lockout for all the supply voltages "VS" (Main DC power supply). All malfunctions cause the output stages to go tristate. The H-Bridge contains integrated free-wheel di- odes. In case of free-wheeling condition, the low side transistor is switched on in parallel of its diode to reduce the current injected into the substrate. Switching in parallel is only allowed, if the voltage level of the according output-stage is below the ground-level. In this case it must be ensured, that the upper transistor is switched off. Figure 2. Block Diagram IN1 VS GND OUT1 OUT2 IN2 DI EN DMS SF/SCK SS SI SO LOGIC UNDERVOLTAGE VS INTERNAL 5V SUPPLY OVERCURRENT HIGH-SIDE OVERCURRENT LOW-SIDE GATE CONTROL 1 GATE CONTROL 2 OVER TEMPERATURE MAXIMUM CURRENT LIMITATION D01AT470A PRELIMINARY DATA SPI CONTROLLED H-BRIDGE Rev. 2 Figure 1. Package Table 1. Order Codes Part Number Package L9929 PowerSO20 L9929XP PowerSSO24 PowerSO20 PowerSSO24 |
类似零件编号 - L9929 |
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类似说明 - L9929 |
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